diff --git a/core/AmUtils.cpp b/core/AmUtils.cpp
index 9ced0464..1297e17b 100644
--- a/core/AmUtils.cpp
+++ b/core/AmUtils.cpp
@@ -280,11 +280,11 @@ bool str2int(const string& str, double& result)
 
     return true;
   }
-  catch (const std::invalid_argument)
+  catch (const std::invalid_argument&)
   {
     return false;
   }
-  catch (const std::out_of_range)
+  catch (const std::out_of_range&)
   {
     return false;
   }